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Texas Instruments MSP430FR2355TRSMR
- Part No.:
- MSP430FR2355TRSMR
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 32-VFQFN Exposed Pad
- Datasheet:
-
MSP430FR2355TRSMR.pdf
- Description:
- IC MCU 16BIT 32KB FRAM 32VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:452
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Product details
Overview
MSP430FR2355TRSMR from Texas Instruments is a 16-bit ultra-low-power FRAM microcontroller with 32KB program FRAM, 4KB RAM, and four Smart Analog Combo (SAC-L3) modules supporting configurable op-amps and 12-bit DACs. It operates from 1.8 V to 3.6 V across –40°C to 105°C and integrates a 12-bit 200 ksps ADC, two enhanced comparators, dual eUSCI_A (UART/IrDA/SPI) and dual eUSCI_B (SPI/I²C), and Timer_B3/TB7 for precise timing control - deployed in battery-powered sensor transmitters and industrial circuit breakers.
For engineers reviewing the MSP430FR2355TRSMR datasheet, MSP430FR2355TRSMR pinout, MSP430FR2355TRSMR application, or MSP430FR2355TRSMR equivalent, key selection criteria include its 32-pin VQFN (RSM) package, SAC-L3 analog configurability, FRAM endurance (10¹⁵ writes), LPM3.5 current (620 nA), and support for Manchester encoding and RTC-based data logging in extended-temperature environments.
Technical Context
The MSP430FR2355TRSMR implements a 16-bit RISC CPU with 24-MHz DCO+FLL clock system, ±1% accuracy at room temperature, and fast wake-up (<10 µs) from low-power modes. Its memory architecture unifies 32KB FRAM (with ECC and write protection) and 4KB SRAM, enabling robust nonvolatile data logging without flash wear-out.
Four SAC-L3 modules each provide rail-to-rail OA/PGA/DAC functionality with programmable gain (×1–×33 noninverting, ×1–×32 inverting), built-in 12-bit reference DAC, and selectable high-/low-power modes - eliminating external signal-chain components in sensor front-end designs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | 16-bit RISC CPU with constant generator; enables high code efficiency and deterministic real-time response. |
| Max Operating Frequency | 24 MHz via DCO+FLL; supports dynamic clock scaling and low-jitter timing for sensor sampling and comms. |
| Memory Configuration | 32KB FRAM + 512B data FRAM + 4KB RAM; unified nonvolatile memory reduces BOM and simplifies firmware updates. |
| ADC Performance | 12-bit SAR ADC, 12-channel, 200 ksps sample rate with internal 1.5/2.0/2.5 V references; suitable for precision analog sensing. |
| Low-Power Modes | LPM3.5: 620 nA (32-kHz crystal active); LPM4.5: 42 nA (SVS disabled); enables multi-year battery life in remote sensors. |
| Analog Peripherals | 4× SAC-L3 (OA/PGA/DAC), 2× eCOMP with 6-bit DAC reference, 100-ns/1-µs response options; replaces discrete op-amp and DAC ICs. |
| Serial Interfaces | 2× eUSCI_A (UART/IrDA/SPI), 2× eUSCI_B (SPI/I²C); supports wired industrial comms and optical module control. |
Pinout & Package
Package: 32-pin VQFN (RSM), 4 mm × 4 mm, thermal pad connected to DVSS. Designed for space-constrained industrial and portable sensor applications.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| DVCC / DVSS | Main power pair | Digital/analog supply and ground; requires 4.7–10 µF bulk + 0.1 µF ceramic decoupling per TI layout guidelines. |
| RST/NMI/SBWTDIO TEST/SBWTCK |
Reset & debug interface | 2-wire Spy-Bi-Wire (SBW) programming/debug; NMI supports external event-triggered wake-up from all LPMs. |
| P1.x–P6.x (28 total) | Configurable I/O ports | 28 GPIOs with interrupt capability on P1–P4; enable wake-up from LPM3.5/LPM4.5 for ultra-low-power sensor polling. |
| XIN / XOUT | LFXT oscillator terminals | Supports external 32.768-kHz crystal for RTC and LPM3 operation; critical for time-stamped data logging. |
| UCB0/UCB1 / UCA0/UCA1 | Serial peripheral pins | Dual I²C (eUSCI_B) and dual UART/SPI (eUSCI_A); allows concurrent sensor bus comms and host interface. |
| SACx+/SACx−/SACxO | Smart Analog Combo terminals | Four independent SAC-L3 modules with differential inputs, rail-to-rail outputs, and PGA gain select - configurable as OA, DAC, or filter stage. |
Key Features
| Feature | Design Value |
|---|---|
| Ferroelectric RAM (FRAM) | 32KB program + 512B data FRAM with ECC, 10¹⁵ write endurance, and instant nonvolatile write - eliminates flash erase delays and wear leveling overhead. |
| Smart Analog Combo (SAC-L3) | Four independent modules each configurable as rail-to-rail op-amp, programmable-gain amplifier (×1–×33), or 12-bit DAC - reduces external analog BOM by up to 4 ICs. |
| Ultra-Low-Power Operation | LPM3.5 draws only 620 nA with 32-kHz crystal and RTC active; enables decade-scale battery life in smoke detectors and wireless sensor nodes. |
| Integrated Clock System | On-chip 24-MHz DCO+FLL (±1% accuracy), REFO, VLO, MODOSC, and LFXT/HFXT support - removes need for external oscillators in most applications. |
| ROM Library | 20KB on-chip ROM with driver libraries (GPIO, UART, I²C) and FFT routines - accelerates firmware development and reduces code footprint in FRAM. |
Applications
| Smoke Detector Signal Processing | Industrial Sensor Transmitter |
|---|---|
|
Use Scenario: Real-time analog conditioning and digital analysis of ionization/photoelectric chamber signals in battery-powered residential/commercial smoke alarms. IC Role / Device Role / Timing Role: MSP430FR2355TRSMR serves as main controller and analog front-end - digitizing sensor outputs via 12-bit ADC, applying gain/offset correction using SAC-L3, and executing alarm logic with RTC timestamping. Use Value: Extended –40°C to 105°C operation ensures reliability in attic/crawl-space installations; FRAM enables secure, wear-free storage of calibration data and event logs. |
Use Scenario: Battery-operated 4–20 mA or digital (I²C/UART) transmitter for temperature, pressure, or gas sensors in factory automation and process control. IC Role / Device Role / Timing Role: MSP430FR2355TRSMR performs sensor excitation, signal amplification (via SAC-L3 PGA), ADC conversion, linearization, and protocol handling - all within one chip. Use Value: LPM3.5 current of 620 nA extends battery life beyond 10 years; integrated eUSCI peripherals eliminate external level shifters and protocol converters. |
| Circuit Breaker Monitoring Unit | Optical Module Control |
|
Use Scenario: Compact embedded monitor inside molded-case circuit breakers for current/voltage sampling, thermal sensing, and trip-event logging. IC Role / Device Role / Timing Role: MSP430FR2355TRSMR acquires analog inputs (shunt voltage, thermistor), computes RMS values using ROM FFT library, stores fault waveforms in FRAM, and triggers alerts via UART. Use Value: Radiation-resistant FRAM ensures data integrity in EMI-heavy electrical panels; 105°C rating supports operation near heat-generating contacts. |
Use Scenario: Low-power control of SFP/XFP optical transceivers requiring laser bias control, temperature compensation, and digital diagnostics (DDM). IC Role / Device Role / Timing Role: MSP430FR2355TRSMR acts as DDM manager - reading EEPROM via I²C, adjusting TEC current via SAC-L3 DAC, and reporting status over SMBus-compatible eUSCI_B. Use Value: Four SAC-L3 modules provide independent DACs for laser bias, TEC drive, and monitor photodiode offset - no external DACs required. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MSP430FR2353TRSMR | 16KB FRAM, 2KB RAM, same SAC-L3/ADC/peripherals; identical 32-pin VQFN package and pinout. | Lower memory capacity suits simpler sensor nodes without extensive data logging or complex firmware. | Select when application firmware fits in 16KB FRAM and 2KB RAM; retains full peripheral compatibility and layout reuse. |
| MSP430FR2155TRSMR | Same FRAM/RAM size (32KB/4KB) but lacks SAC-L3 modules; retains 12-bit ADC, comparators, and serial interfaces. | Targeted at cost-sensitive applications needing basic sensing and comms, but not programmable analog signal chains. | Choose if SAC-L3 functionality is unnecessary; offers lower unit cost while maintaining memory and timing capabilities. |
Compared with MSP430FR2355TRSMR, the MSP430FR2353TRSMR provides identical analog/peripheral integration at reduced memory density, while the MSP430FR2155TRSMR removes SAC-L3 entirely - making the MSP430FR2355TRSMR uniquely suited for applications requiring on-chip programmable op-amps and DACs without external components.
Availability
MSP430FR2355TRSMR is available at Aetrix Electronics and suitable for smoke detector manufacturing, industrial sensor transmitter design, and optical module control systems requiring stable component supply, long-term lifecycle assurance, and extended-temperature qualification.
Supply support for MSP430FR2355TRSMR includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Texas Instruments is a global semiconductor leader delivering analog, embedded processing, and connectivity solutions for industrial, automotive, and consumer applications.
The MSP430FR2355TRSMR belongs to TI's ultra-low-power FRAM MCU value line, engineered specifically for sensing and measurement systems where extended temperature range, nonvolatile memory endurance, and integrated analog flexibility reduce system cost and complexity.
FAQ
What is the operating temperature range of the MSP430FR2355TRSMR?
The MSP430FR2355TRSMR is rated for operation from –40°C to 105°C. This extended temperature range is validated per TI's production testing and enables reliable deployment in demanding environments such as circuit breaker enclosures, rooftop HVAC units, and industrial sensor housings - where ambient temperatures exceed standard commercial-grade limits. The MSP430FR2355TRSMR maintains full FRAM, ADC, and SAC-L3 functionality across this range.
How does the Smart Analog Combo (SAC-L3) in the MSP430FR2355TRSMR differ from standard op-amps?
The SAC-L3 modules in the MSP430FR2355TRSMR integrate op-amp, PGA, and 12-bit DAC functions in a single configurable block. Each SAC-L3 supports rail-to-rail I/O, programmable gain (×1–×33 noninverting), built-in offset DAC, and selectable high-/low-power modes - unlike discrete op-amps, which require external resistors, DACs, and power management. This integration reduces PCB area and component count in sensor signal chains.
What low-power mode current does the MSP430FR2355TRSMR achieve with RTC active?
In LPM3.5 mode with the 32.768-kHz crystal oscillator and RTC counter enabled, the MSP430FR2355TRSMR draws 620 nA (typical) at 3 V with SVS enabled. This ultra-low current allows multi-year operation on coin-cell batteries in applications like wireless smoke detectors and environmental monitors - while retaining time-stamped data logging capability via the RTC and FRAM.
Is the MSP430FR2355TRSMR pin-compatible with other devices in the FR235x family?
Yes - the MSP430FR2355TRSMR shares identical pinout and package (32-pin VQFN, RSM) with the MSP430FR2353TRSMR, MSP430FR2155TRSMR, and MSP430FR2153TRSMR. All four devices have the same signal mapping on each pin, enabling hardware reuse across memory and feature variants without PCB redesign.
Does the MSP430FR2355TRSMR support Manchester encoding for optical communication?
Yes - the MSP430FR2355TRSMR includes a dedicated Manchester codec (MFM) peripheral. It supports both transmit (MFM.TX) and receive (MFM.RX) functions on dedicated pins (P5.1 and P5.0), enabling direct interfacing with infrared or fiber-optic physical layers without external encoding logic - commonly used in toll tag and optical module applications.
MSP430FR2355TRSMR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 32-VFQFN Exposed Pad
- Series:
- MSP430™ FRAM
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- MSP430 CPU16
- Core Size:
- 16-Bit
- Speed:
- 24MHz
- Connectivity:
- I2C, IrDA, SPI, UART/USART
- Peripherals:
- Brown-out Detect/Reset, POR, PWM, WDT
- Number of I/O:
- 28
- Program Memory Size:
- 32KB (32K x 8)
- Program Memory Type:
- FRAM
- EEPROM Size:
- -
- RAM Size:
- 4K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.8V ~ 3.6V
- Data Converters:
- A/D 8x12b SAR
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
MSP430FR2355TRSMR FAQ
1.How can I place an order for MSP430FR2355TRSMR through Aetrix?
Please submit a Request for Quotation (RFQ) for MSP430FR2355TRSMR on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for MSP430FR2355TRSMR reliable?
The price and inventory of MSP430FR2355TRSMR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MSP430FR2355TRSMR is usually 5 days.
3.What payment methods are accepted for MSP430FR2355TRSMR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MSP430FR2355TRSMR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MSP430FR2355TRSMR?
MSP430FR2355TRSMR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MSP430FR2355TRSMR order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for MSP430FR2355TRSMR?
For technical support, including MSP430FR2355TRSMR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MSP430FR2355TRSMR requirements.
6.How does Aetrix verify that MSP430FR2355TRSMR is sourced from the original manufacturer or authorized distributors?
All MSP430FR2355TRSMR products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that MSP430FR2355TRSMR meets industry standards.
7.What is the process for return or replacement of MSP430FR2355TRSMR?
All MSP430FR2355TRSMR units undergo pre-shipment inspection (PSI). If there is an issue with MSP430FR2355TRSMR, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The MSP430FR2355TRSMR part is unused and in its original packaging.
Return procedure for MSP430FR2355TRSMR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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